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Five server selection pitfalls: CPU, bandwidth, and firewall configurations explained
Time : 2025-08-06 16:18:57
Edit : Jtti

The server selection for e-commerce websites directly impacts the website's efficient and stable operation. Server performance is crucial in high-concurrency scenarios such as user growth, promotional events, and payment security. Enterprises often fall into five typical pitfalls when selecting servers. This article will analyze key configuration errors, such as CPU, bandwidth, and firewall, based on server architecture, and provide practical suggestions to help e-commerce companies avoid these pitfalls and improve efficiency.

Trap 1: Focusing solely on CPU frequency while ignoring the architecture and core thread matching

When selecting servers, many operations professionals still cling to the notion that "the higher the frequency, the better." In reality, for modern e-commerce websites, especially those using platforms like Magento, Shopify Plus, or self-built PHP+MySQL architectures, CPU architecture has a far greater impact on response speed than frequency. For example, with the same 3.0GHz processor, the multi-threaded performance of an Intel Xeon Silver and an AMD EPYC can differ by over 30%. For systems with high dynamic content, such as WordPress or PrestaShop, it's recommended to choose a CPU with high cache and hyperthreading support. Recommended Models:

Intel Xeon Gold 6338 (32 cores, 64 threads), AMD EPYC 7543P (32 cores, 64 threads).

To test the performance of your current host, execute the following command in SSH:

lscpu

Trap 2: Default shared bandwidth, but throughput is actually limited.

Some overseas VPS or cloud server providers advertise "unlimited bandwidth," but closer inspection reveals shared bandwidth and even hidden "Fair Use Policy" restrictions. For cross-border e-commerce businesses, this bandwidth bottleneck is particularly critical during major sales like flash sales and Black Friday. It can easily lead to: website lag, payment response timeouts, image and video loading failures, and API call blockages, impacting CRM/ERP system collaboration. Recommended Model:

Dedicated bandwidth: ≥ 100Mbps starting point. Dedicated 1Gbps international bandwidth is recommended. Bandwidth packages can be expanded based on actual page views and user traffic.

To check real-time bandwidth usage in Linux, use the following command:

iftop -n

Pit 3: Underestimating Firewall Rules and Ignoring DDoS Protection

Some website administrators often view firewall configuration as a secondary function, believing that simply installing iptables or enabling basic security groups is sufficient. However, in reality, cross-border e-commerce websites are high-value targets for attackers, including but not limited to: scripts scanning sensitive paths; DDoS traffic shocks that paralyze business operations; and attacks on payment interfaces and the insertion of phishing scripts. It is recommended to install fail2ban and configure an nginx rate limiting policy at the software level; select servers with basic DDoS protection at the network level, or add enterprise-grade BGP high-defense nodes that can protect against burst traffic of at least 10-100Gbps; and integrate a WAF service and web firewall at the cloud platform level. After deploying protection, the following configuration example can be used for domain name resolution:

server {
listen 443 ssl;
server_name yourshop.com;
set_real_ip_from 173.245.48.0/20;
real_ip_header CF-Connecting-IP;
}

Pitfall 4: Ignoring the Actual Access Latency of Regional Nodes

Many users focus solely on the server's location, such as "Singapore Data Center" or "California Node," but ignore the actual link performance. Some nodes, despite ideal geographical locations, utilize standard international routes, resulting in high access latency, impacting user experience. Especially when targeting markets in Southeast Asia, the Middle East, and Africa, link quality is crucial for delivery efficiency. We recommend selecting servers with CN2 GIA/GT, international BGP priority, and backhaul-optimized dedicated lines. For example, the Singapore CN2 and Hong Kong CMI route nodes, which serve the Southeast Asian market, offer excellent performance.

You can use the following command to test access latency to the target region:

ping -c 4 singapore.amazon.com

Pit 5: Confusing SSDs with NVMe and Under-Understanding I/O Bottlenecks

E-commerce platforms' product images, database queries, and logging systems frequently consume disk I/O. If SATA SSDs or even mechanical hard drives are still used, problems such as slow database response, backend lag, and lost orders may occur. We recommend choosing an NVMe SSD array, at least in a RAID 10 configuration, and enabling the following parameters in MySQL/MariaDB:

innodb_flush_log_at_trx_commit = 2
innodb_buffer_pool_size = 4G

If file reads need to be further accelerated, Redis can be added as a caching layer.

Cross-border e-commerce in 2025 will no longer be a matter of building a single site; it will reflect the efficiency of the platform ecosystem. When selecting servers, enterprises must move beyond the outdated mindset of simply judging quality based on price and consider computing performance, network structure, security policies, and I/O architecture to build a truly robust foundation for cross-border services.

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